432 citations · 3.2k across the 70 of their papers we have counts for
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Inflationary assessment of Einstein-Cartan models
Theodoros Katsoulas, Kyriakos Tamvakis
In the framework of Einstein-Cartan gravity with an action depending both of the Ricci scalar and the so-called Holst-invariant curvature we co…
Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
Ioannis D. Gialamas, Theodoros Katsoulas, Kyriakos Tamvakis
We introduce a modification of the Starobinsky model in the form of an additional cubic Ricci scalar curvature term , scaled by a dimensionless parameter , with the r…
General Einstein-Cartan quadratic gravity with derivative couplings
Theodoros Katsoulas, Kyriakos Tamvakis
Within the framework of Einstein-Cartan gravity we consider an action, containing up to quadratic terms of the Ricci scalar and the Holst invariant, coupled non-minimally to a scal…
Cosmic inflation in metric-affine gravity
Ioannis D. Gialamas, Kyriakos Tamvakis
In the context of metric-affine gravity theories, where the metric and connection are independent, we examine actions involving quadratic terms in the Ricci scalar curvature and th…
Inflation in Weyl-invariant Einstein-Cartan gravity
Ioannis D. Gialamas, Kyriakos Tamvakis
We consider Weyl-invariant quadratic Einstein-Cartan gravity coupled to a scalar field and study the inflationary behaviour of the coupled system of the scalar field and the pseudo…
Inflation and reheating in quadratic metric-affine gravity with derivative couplings
Ioannis D. Gialamas, Theodoros Katsoulas, Kyriakos Tamvakis
Within the framework of metric-affine theories of gravity, where both the metric and connection are treated as independent variables, we consider actions quadratic in the Ricci sca…